Green recycling system and method for glass tube of waste and old fluorescent lamp

A recycling system and fluorescent lamp technology, applied in the field of green recycling system for waste fluorescent lamp glass tubes, can solve the problem of not taking into account the separation and recycling of glass at the same time, and achieve the effects of convenient operation and high sorting efficiency

Active Publication Date: 2018-09-04
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Constructive methods and devices have been proposed in terms of green crushing and recycling technology for fluorescent tubes and harmless treatment of mercury, but they have not taken into account the separation and recovery of glass, magnetic metals, non-magnetic metals, fluorescent powder, and mercury at the same time.

Method used

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  • Green recycling system and method for glass tube of waste and old fluorescent lamp
  • Green recycling system and method for glass tube of waste and old fluorescent lamp
  • Green recycling system and method for glass tube of waste and old fluorescent lamp

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Effect test

Embodiment 1

[0052] An embodiment of the green recycling system for waste fluorescent lamp glass tubes of the present invention, the green recycling system for waste fluorescent lamp glass tubes in this embodiment includes a glass crushing device, a vacuum heating device, a condensation device, a vibration grading and screening device, and an eddy current separation device and photoelectric separation device.

[0053] The glass crushing device described in this embodiment is as figure 1 As shown, the glass crushing device 1 is a shearing crusher, the glass crushing device 1 is provided with a material inlet cover 101, the material inlet cover is provided with a sealing rubber ring 102, and the inner side of the material inlet cover 101 is detachable Filling tank 103 is provided on the ground, and sulfur-loaded activated carbon is housed in the stuffing tank 103. The glass breaking device is provided with a condensate pipeline 104. The outer wall of the glass breaking device is provided wit...

Embodiment 2

[0063] A kind of embodiment of waste fluorescent lamp glass tube green recycling method of the present invention, as Figure 4 shown, including the following steps:

[0064] (1), breaking: breaking the waste fluorescent lamp glass tube to obtain a broken mixture;

[0065] (2) Mercury removal: heating the broken mixture under vacuum conditions, and then condensing the volatilized mercury vapor to obtain elemental mercury and the broken mixture after removing mercury;

[0066] (3) Phosphor removal: the crushed mixture after mercury removal is vibrated, classified and sieved to obtain a crushed mixture of large particles and a powdery phosphor powder containing rare earth metals;

[0067] (4), eddy current separation: the crushed mixture of the large particles obtained in step (3) is subjected to eddy current separation to obtain magnetic metal particles, non-magnetic metal particles and clean glass fragments;

[0068] (5), photoelectric sorting: the clean glass shards obtained...

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Abstract

The invention discloses a green recycling system for a glass tube of a waste and old fluorescent lamp, and the system comprises a glass breaking device, a vacuum heating device, a condensation device,a vibration grading and screening device, an eddy current sorting device, and a photoelectric sorting device. The system provided by the invention achieves the pollution-free processing and high-efficiency recycling of the heavy metal element mercury in the tube of a waste and old fluorescent lamp, so the system is environment friendly. The system is high in sorting efficiency for fluorescent powder containing rare earth elements, magnetic iron, non-magnetic aluminum, copper and tungsten, and lamp tube glass. Moreover, the system is convenient to operate, is important for the targeted recycling of resources, and saves the resources. The invention also discloses a green recycling method for the glass tube of the waste and old fluorescent lamp.

Description

technical field [0001] The invention relates to a recycling system for waste, in particular to a green recycling system and method for glass tubes of waste fluorescent lamps. Background technique [0002] Since Philips of the Netherlands first developed red, green and blue phosphors in 1974, human beings have developed energy-saving and efficient fluorescent lamps containing rare earth metals, which are also called fluorescent lamps in daily life. Compared with incandescent lamps, fluorescent lamps have the most important advantages It saves a lot of energy, thereby reducing greenhouse gas emissions, and its service life can reach more than 10 times that of incandescent lamps, so it has become the light source with the largest amount of lighting at present. In 1994, the output of fluorescent lamps in China was about 250 million. By 2011, the output of fluorescent lamps had increased to 7 billion. At present, a large number of used fluorescent lamps have been scrapped and bec...

Claims

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Application Information

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IPC IPC(8): H01J9/52
CPCH01J9/52Y02W30/60Y02W30/82
Inventor 阮菊俊黄哲许振明
Owner SUN YAT SEN UNIV
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